Multi-objective Optimization of a Two-Stage Helical Gearbox with Second Stage Double Gear Sets to Decrease Gearbox Height and Increase Gearbox Efficiency

The aim of this study is to investigate multi-target optimization of a two-stage helical gearbox with second stage double gear sets (SSDGS) in order to discover the optimal major design factors for reducing gearbox height and increasing gearbox efficiency. The Taguchi approach and grey relation analysis (GRA) were employed to solve the problem in two steps. The single-objective optimization problem was handled first in order to decrease the difference among variable levels, and then the multi-objective optimization problem was dealt with in order to identify the best primary design variables. The first and second stage coefficients of wheel face width (CWFW), permissible contact stresses (ACS), and first stage gear ratio were also computed. The outcomes of the study were used to determine the optimal values for five essential characteristics of a two-stage helical gearbox with SSDGS.